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CHEMWEST ANALYTICAL LABORATORIES <br /> HALOGENATED VOLATILE ORGANICS <br /> EPA METHOD: 8010 <br /> Quality Control <br /> Client ID: LQCS GC-3 S304 CHEMWEST ID: 9796-QCI <br /> Date Analyzed: 07/08/92 Matrix : Soil <br /> ' Spike % % <br /> Conc. Recovery Recovery <br /> Compound (MG/KG) <br /> --------------^ -_-------- M-SD <br /> ------9796- <br /> RPD <br /> - " ------ <br /> I , 1-Dichloroethane 0. 30 103% 103% 0% <br /> Chloroform 0. 30 93% 100% 7% <br /> Trichloroethene 0. 30 107% 110% 3% <br /> Bromodichloromethane 0 . 30 93% 103% 10% <br /> Tetrachloroethene 0 . 30 103% 100% 3% <br /> Chlor <br /> ' Ethyleben2ene______________0 . 30-_-_-r-r103%-- -----100%__-_--_11% <br /> Ethylenedibromide 0 . 30 90% 100% 1.1$ <br /> Spike % % <br /> Conc. Recovery Recovery <br /> Surrogates (MG/KG) 9796--MBS 9796-MBSD <br /> S T--_______ __________ __ ___- ___--___-- <br /> Bromochloromettiane1093% 104$ <br /> ortho-Chlorotoluene 20 95% 99% <br /> ----------------------------_--_---_--_------------------------------- <br /> ' Date Reported : <br /> Approved by: 08/04 /92 REV4 . 1. 90 <br /> COMPUCHEM WFSTFRN DIVISION <br />